Sometimes a good plan doesn’t come together. So if you see something missing in a cog - like pictures or font styling missing, for instance - then it’s likely that a momentary internet disconnection put a spanner in the works.
What you need to do is prompt your web browser to try downloading the cog parts again. You can do this by clearing your web browser’s cache. This will remove the faulty downloads and prompt your web browser to start the process from scratch. Take a look at these instructions to find out how to do so.